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Technical Data Sheet
PartsTable / O-RING / ST1946-910
ST1946-910 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include end_item_identification: KC-46A AIRCRAFT A, reference_number_differentiating_characteristics: ITEM IS FAA CERTIFIED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-477-7363, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
ST1946-910
NSN: 5331-01-477-7363
FSC: 5331 — O-RING
CAGE: 1CN74 — FREUDENBERG-NOK GENERAL PARTNERSHIP DBA INTERNATIONAL SEAL CO INC (USA)
SPECIFICATIONS
end_item_identificationKC-46A AIRCRAFT A
reference_number_differentiating_characteristicsITEM IS FAA CERTIFIED
NSN5331-01-477-7363
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST1946-910 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.625 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.755 INCHES NOMINAL IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESTHICKNESS IS 0.097 INCH IN
CROSS-SECTIONAL HEIGHT0.625 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.755 INCHES NOMINAL IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
SF10824 ITEM 17Interchangeable
interchangeable cross-reference
interchangeable
3-910 N674-70Interchangeable
interchangeable cross-reference
interchangeable
16360-310Interchangeable
interchangeable cross-reference
interchangeable
M83485/1-910Interchangeable
interchangeable cross-reference
interchangeable
ST1946-910Interchangeable
interchangeable cross-reference
interchangeable
VUM835 3-910Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST1946-910?
ST1946-910 is a O-RING.
What parts can replace ST1946-910?
There are 9 known substitutes for ST1946-910: SF10824 ITEM 17, 3-910 N674-70, 16360-310 and 6 more. Substitute compatibility should be verified for your specific system.
Is ST1946-910 still available?
ST1946-910 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026